Bobbin for weft-replenishing looms



Dec.-30, 1930. R. e. TURNER 1,786,682

BOBBIN FOR WEFT REPLENISHING LOOMS v Filed May 3, 1929 +O 5 [NVENTU/P m 'R/CHARUG. TURNER A r TUE/V5 Y5 Patented Dec. 30, 1930 UNITED STATES? PATENT OFFICE Brennan G. TURNER, or woncnsrnn, MASSACHUSETTS, ASSIGNOR-TO CROIVIPTDN &

KNOWLES LOOM WORKS, OF WORCESTER,

trassacnnsnrrs M'ASSACHUSETTS, A CORPORATION OF BOBIBIN' FOR WEFT-REPLENISHING LOOMS Application filed MayB, 1929. Serial No. 360,244.

Thisinvention relates to improvements in bobbins for weft replenishing mechanisms more particularly of the type where the ends of the bobbins are tied together so as to obviate the need of a thread holder and it is the general object of the invention to provide a bobbin so formed that the tied weft ends will pot be unduly disturbed at the time of trans.- er 7 In my co-pending application Serial No. 298,223 I have shown a method of attaching the weft ends of bobbins in pairs and feeding the same toward transfer positions. I find that in certain. classes of yarn the sudden shock at the time of transfer is sufficient to break the weft; end so that the shuttle is not properly threaded. It is an'important object of my present invention to provide certain at least of the bobbins with means for defining with the other bobbins spaces in which the tied weft ends may lie and not be subject to the weight of the superimposed bobbins.

' It is a more particular object of my present invention to wind the bobbins with bunches of weft the diameter of whichis slightly in excess of the diameter of the main portion of the bobbin, the bunches being so disposed that they will engage each other and define between themselves and the bobbins a slight opening which may be occupied by the tied weft ends. While I have shown all of the bobbins herein as being provided with two bunches yet I do not wish to be limited to this form ofbobbin.

WVith these and other objects in view which will appear as the description proceds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims. 7 I

In the accompanyingdrawings wherein a convenient embodiment of my invention-is set forth, v

Fig. 1 is a diagrammatic front elevation of a portion of a magazine having my improved type of bobbins stored therein, I

Fig. 2 is a diagrammatic top plan View taken in the direction of arrow 2, Fig. 1, and

Fig. 3 is a vertical section on line 33 of Fig. '2.

Referring to Figs. '1 and 2 I have shown diagrammatically structure which may be employed to direct the bobbins toward transfer position, said structure comprising a base 10 and bobbin tip andbutt guideways 11 and 12, respectively. These guideways are substantially paralel and permit the feeding by gravity of the bobbins which extend between them. A transferrer device 13 may be employed to efiect the discharge of a bobbin from the magazine into a depleted shuttle. lVhile I have employed my invention particularly in connection with double shuttle looms yet certain features of my invention are equally adaptable to single shuttle looms and it is for this reason that]: have designated but one" transferrer device 13 although if desired an additional transferrer arm can be employed. The bobbins may be of usual form comprising a butt 20 on which are mounted rings 21,

said bobbinhaving a wooden barrel 22 which there is a mass of yarn designated at 32 which may be cylindrical and of substantially 'uniform diameter. This much of the wound.

mass of yarn is of the usual construction.

My invention relates more particularly to means for'defining between the bobbins a small space to receive the ends 33 and 34 which may extend from two adjacent bobbins and be tied together as at 35. The ends are preferably left not only long enongh to permit movement of the bobbin from the magazine into the shuttle but also movement of the lay rearwardlyuntil the'shuttle is picked, and this length of yarn is preferably located between the bobbins. I find, as previously stated, that when the weight of a stack of bobbins is brought to bear on the weft ends of one of the lower bobbins which is being transferred there is likelihood of the tied weft ends breaking. In order to prevent this I wind the bobbins so that there is a bunch 40 located near the butt of the bobbin and a second bunch 41 located near the tip, the bunches being of slightly greater diameter than that of the cylindrical wound mass 32.

\Vhen the bobbins are disposed in the magazine as set forth in Fig. 1 the bunches will be in substantial vertical alignment and by contacting with each other will hold the cylindrical portions of masses of weft apart to define spaces between the bobbins. The bobbins are so placed in the magazine that the ends 33 and 3% together with the knot 35 will be disposed between the bobbins in the space between the bunches.

At the time of transfer it will be apparent that the lowest bobbin can be moved from the magazine without subjecting the tied weft ends to any strain, inasmuch as the upper bobbins are held spaced from said weft ends by the bunches. For this reason there is no tendency to break the weft ends at the time of transfer.

Vhile I have shown herein a pair of bunches on each bobbin yet I do not wish to be limited to this arrangement, as it is within the scope of my present invention to form the wound mass of yarn in such a way that the main body of weft on a bobbin will be out of contact with the main body of weft on the adjacent bobbins, or at least on the bobbin thereabove when in transfer position, and any type of wind of the bobbin which will accomplish this result is considered to be within the scope of my present invention.

From the foregoing it will be seen that I have provided a very simple and effective means for holding the main portion of the wound weft of the bobbins out of contact so as to define spaces in which may be disposed the tied weft ends of adjacent bobbins.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. A pair of bobbins having the free weft ends thereof tied together, one of said bobbins being so wound that the main body of yarn thereon is held out of contact with but supported by the other bobbin to separate the bobbins and define a space between them in which the tied weft ends may lie.

2. In a magazine having means to hold reserve bobbins one over the other and in contact with each other, a pair of bobbins in the magazine having their free weft ends tied together, one of said bobbins being wound with a zone of enlarged diameter to hold the bodies of yarn on the two bobbins separated to define a space in which may lie the tied weft ends.

3. In a magazine having a guideway down which bobbins in contact with each other may move under influence of gravity, a pair of bobbins in the guideway having their ends tied together, the bobbins having cylindrical masses of weft of substantially equal diameters, one of said bobbins having a bunch of weft of larger diameter than that of the cylindrical mass, said bunch to engage the adja cent bobbin to hold the wound masses apart to define a space in which the tied weft ends may lie.

4. In a magazine having a guideway down which bobbins in contact with each other may move under influence of gravity, a pair of bobbins in the guideway having their ends tied together, the bobbins having cylindrical masses of weft of substantially equal diameters, one of said bobbins having a pair of spaced bunches of weft of larger diameter than that of the cylindrical mass of weft, said bunches engaging the adjacent bobbin to define between the bobbins a space in which the tied weft ends may lie.

5. In a magazine having a guideway down which bobbins in contact with each other may move under influence of gravity, a pair of bobbins in the guideway having their ends tied together, the bobbins having cylindrical masses of weft of substantially equal diameters, each of said bobbins having a bunch of weft of larger diameter than the diameter of the wound mass of weft, each bunch engaging the adjacent bobbin to hold said bobbins apart to define a space in which the tied weft ends may lie.

6. In a magazine having a guideway down which bobbins in contact with each other may move under influence of gravity, a pair of bobbins in the guideway having their ends tied together, the bobbins having cylindrical masses of weft of substantially equal diameters, each of said bobbins having a bunch of weft of larger diameter than the diameter of the wound mass of weft, each bunch engaging the adjacent bunch to hold said bobbins apart to define a space in which the tied weft ends may lie.

7. In a magazine having a guideway down which bobbins in contact with each other may move under influence of gravity, a pair of bobbins in the guideway having their ends tied together, the bobbins having cylindrical masses of weft of substantially equal diameters, each bobbin having a pair of spaced bunches of weft of larger diameter than the diameter of the cylindrical mass of weft, the bunches of'one bobbin engaging the bunches of the other bobbin to hold the cylindrical masses of yarn apart to define a space between the bobbins in which the tied weft ends may be.

8. In a magazine having a guideway down which bobbins in contact with each other'may move under influence of gravity, a pair of bobbins in the guideway having their ends tied together, the bobbins having cylindrical masses of weft of substantially equal diameters, each bobbin having a pair of spaced bunches of weft of larger diameter than the diameter of the cylindrical mass of Weft, the 

